Cabxi winxleb



C. WINKLER.

MOLD FOR STEREOTYPE PLATES ANDTHE LIKE.

` APPLICATION FILED 1uLY26, 1916;

1,313,774... PnntedAug-.19,1919.

,4 TOHNEYS Y a special manner.' The object tain the coolin or BERNE, SWITZERLAND.

OLD FOR STEBEOTYPE-PLATES THE LIKE.

Specification of Letters Patent. I Patented Aug. 19, 1919.

application inea my 26, 191s. sexismo. 111,488.

To all whom it may concern: r

Beit known that I, CARL WINKLER, a citizen of the Swiss Re ubli'c, residing at Berne, in the Swiss Repu lic, have invented newv and useful Improvements in Molds for Stereotype-Plates andthe like, of which the following is'a specification.

My present invention relates to a mold for castinI stereotype which sai plates, when cast, are cooled 'in of my invention is to produce a plate which will answer the strictest' requirements in regard to accuracy, and, consequently, can be used, with the best results, .for color printing.

On the drawing two constructions of th new mold are shown Figure y1 being a cross mold in which a special section through I a vessel for containing thev cooling water is provided in the drag Fig. 2 'is an elevation of the mold as seen in the direction of the arrow shown in Fig. 1, v I,

4ig. shows a cross section, correspondinto Fig. 1, of a second construction,

ig. 4 is an elevation, corresponding to Fig. 2, of the moldshownin Fig. 3.

n' existing constructions of molds used for casting stereot eplates, and the like, in which the cooling 1s effected by means of chambers provided inthe parts of the mold, it is a great drawback that the cooling agent usedV (Water, steam, trates through the walls ofsaid chambers and badl influences the casting process.

Accor ing to my present invention this drawback is overcome by carrying out the cooling process indirectly, instead of directly, as heretofore. For example, as shown in Figs. 1 and 2, a vessel c, adapted to conagent, is placed against the inner wall of t e drag a, which is arranged in known manner in regard to the bed b The cooling agent is fed to the vessel c through the pipe d at one end, and it is led o at the other end by a pipe e. The feed pipe d-extends over the entire length of the vessel c, and inside said vessel, it has a number of Small perforations, through which the cooling agent escapes, in order to run down the wall of said vessel, and to collect therein.

The bed b may either be cooled directly by feeding the cooling agent direct into mantle f, or, as inthe case of the drag, by

j As,

plates and the like, in y -and inserting said vesse have shown that for this purpose,

or the like) pene` the . providing a special vessel for the cooling agent.

in such molds, the temperature near the' inlet for the molten metal is much higher than on the opposite side, 'it is of advantage to make the wall of the mold, near to said inlet, or .at other points where the temperature 1s higher, thinner than at other parts so that the cooling eiect exercised at such thinnerI partsy is correspondingly greater, and consequently, a uniiorm temperature is approached throughout the whole mold. Such an arrangement is shown, by way of example, in Figs. 3 and The vessel c', adapted Ato contain the cooling agent, is arranged in the cooling chamber of the drag a in such a manner that it bears against the wall of said drag, and this wall is thinner near the inlet g for the molten metal than at other parts, so that the vessel is eccentric to the mold.

Instead of making a s ecial vessel o, c in the cooling chamber of the drag and bed, it suiiices to provide the inside walls of the cooling chamber with a metal deposit which will close the pores in said walls. Experiments for ex ample, the metal sprayinnprocess may be 'used with advantage, although an electrolytic, or other, deposit of copper, tin, zinc, or other metal, may also be used.

What I claim and desire to secure by Letters Patent is i 1. The combination with a mold for stereotype plates, and the like, having cooling chambers in the parts thereof, of means to prevent the cooling agent used from coming into immediate contact with the walls of said cooling chambers, substantially as, and for the purpose, set forth.

2. The combination with a mold for stereotype plates, and the like, havin cooling chambers in the parts thereof, o a metal layer protecting the walls of said cooling chambers from contact with the cooling two subscribing witnesses.

CARL WINKLER.

Witnesses:

LEON Bo'rUss DE SAUvANn,

H. J. SmiHmN. 

